Micom P721, Technical Manual

Page: 74 / 334

P72x/EN FT/C21 User Guide
Page 34/38 MiCOM P721/P723
2.9 RECORDS Menu
Through the RECORDS menu, stored data, events, disturbances and monitoring information
can be displayed and read.
The different submenus are:
RECORDS
Fault
Record Instantane-
ous records Disturbance
records
2.9.1 Fault Record submenu
The Fault Record submenu makes it possible to read up to twenty five stored fault records.
Information about a fault is recorded when a threshold is crossed.
RECORDS
Fault Record
Heading of the trip commands (fault records) submenu.
fault Record
2
Selection of the fault record number to be displayed
(select either 1, 2, 3, 4 or 5).
fault Time
12:05:23:42
Displays the time when the fault was recorded. The
format of the time is hh:mm:ss.
In this example the fault was recorded at 12:05:23 pm
(and 420ms).
fault Date
12/11/99
Displays the date when the fault was recorded. The
format of the Date is DD/MM/YY.
In this example, the fault was recorded on November
12th 1999.
Active Set Group
1
Displays the active setting group (1 or 2).
Faulted Phase
Earth
Displays the phase, where a fault occurred, for the
chosen fault record.
Threshold
[87]
tDiff
Displays the origin of the fault that generated the trip
order.
Fault Magnitude
1200
A
Displays the magnitude value of the fault: Voltage,
current, earth power. The value is based on the
amplitude at 50 or 60 Hz.
IA Diff R.M.S
1200
A
Displays the magnitude value of the phase A current at
the time of the fault.
IB Diff R.M.S
500
A
As above for phase B.
IC Diff R.M.S
480
A
As above for phase C.
In Diff R.M.S
103
A
As above for earth current.